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  3. V01–Y99
  4. X00-X08
  5. Exposure to uncontrolled fire, not in building or structure (X01)

Exposure to uncontrolled fire, not in building or structure (X01)

The ICD-10 code X01 classifies exposure to uncontrolled fires occurring outside buildings or structures, including flames, smoke, and related injuries. These codes are essential for documenting injuries such as burns, smoke inhalation, falls, or trauma caused by objects during outdoor fires.

The section covers a variety of scenarios including exposure to flames (X01.0), smoke (X01.1), falls due to fire (X01.3), and being hit by an object during an uncontrolled fire (X01.4). Codes specify the encounter type; initial, subsequent, or sequela; using seventh characters like XXA, XXD, and XXS. Common terms associated with these codes include “burn caused by forest fire,” “fire storm,” and “wildfire,” which help coders link injuries to specific outdoor fire situations. For instance, the ICD-10 code for burn caused by wildfire exposure is captured under X01.8XXA. Accurate selection within this section supports proper clinical documentation and injury tracking related to uncontrolled outdoor fires.

  • External causes of morbidity and mortality (V01–Y99)

    • Exposure to smoke, fire and flames (X00-X08)

        • Exposure to uncontrolled fire, not in building or structure (X01)

        • X01 Exposure to uncontrolled fire, not in building or structure
        • X01.0 Exposure to flames in uncontrolled fire, not in building or structure
        • X01.0XXA Exposure to flames in uncontrolled fire, not in building or structure, initial encounter
        • X01.0XXD Exposure to flames in uncontrolled fire, not in building or structure, subsequent encounter
        • X01.0XXS Exposure to flames in uncontrolled fire, not in building or structure, sequela
        • X01.1 Exposure to smoke in uncontrolled fire, not in building or structure
        • X01.1XXA Exposure to smoke in uncontrolled fire, not in building or structure, initial encounter
        • X01.1XXD Exposure to smoke in uncontrolled fire, not in building or structure, subsequent encounter
        • X01.1XXS Exposure to smoke in uncontrolled fire, not in building or structure, sequela
        • X01.3 Fall due to uncontrolled fire, not in building or structure
        • X01.3XXA Fall due to uncontrolled fire, not in building or structure, initial encounter
        • X01.3XXD Fall due to uncontrolled fire, not in building or structure, subsequent encounter
        • X01.3XXS Fall due to uncontrolled fire, not in building or structure, sequela
        • X01.4 Hit by object due to uncontrolled fire, not in building or structure
        • X01.4XXA Hit by object due to uncontrolled fire, not in building or structure, initial encounter
        • X01.4XXD Hit by object due to uncontrolled fire, not in building or structure, subsequent encounter
        • X01.4XXS Hit by object due to uncontrolled fire, not in building or structure, sequela
        • X01.8 Other exposure to uncontrolled fire, not in building or structure
        • X01.8XXA Other exposure to uncontrolled fire, not in building or structure, initial encounter
        • X01.8XXD Other exposure to uncontrolled fire, not in building or structure, subsequent encounter
        • X01.8XXS Other exposure to uncontrolled fire, not in building or structure, sequela

Instructional Notations

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

  • exposure to forest fire

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

  • The appropriate 7th character is to be added to each code from category X01

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela